wpf 错误 - 已经使用相同的参数类型定义了一个名为“InitializeComponent”的成员
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Error - already defines a member called 'InitializeComponent' with the same parameter types
提问by Diaconescu Cristian
I tried to make an example of the book that shows exactly
我试图为这本书做一个例子，它准确地显示了
private Button button1;
public MainWindow()
{
InitializeComponent();
}
private void InitializeComponent()
{
// Configure the form.
this.Width = this.Height = 285;
this.Left = this.Top = 100;
this.Title = "Code-Only Window";
// Create a container to hold a button.
DockPanel panel = new DockPanel();
// Create the button.
button1 = new Button();
button1.Content = "Please click me.";
button1.Margin = new Thickness(30);
// Attach the event handler.
button1.Click += button1_Click;
// Place the button in the panel.
IAddChild container = panel;
container.AddChild(button1);
// Place the panel in the form.
container = this;
container.AddChild(panel);
}
private void button1_Click(object sender, RoutedEventArgs e)
{
button1.Content = "Thank you.";
}
But it gives me an error:
但它给了我一个错误：
"Type 'WpfApplication1.MainWindow' already defines a member called 'InitializeComponent' with the same parameter types"
"Type 'WpfApplication1.MainWindow' already defines a member called 'InitializeComponent' with the same parameter types"
回答by Eugene Podskal
WPF Windowclass created in Visual Studio usually has InitializeComponentmethod that is used to initialize its properties and contents - What does InitializeComponent() do, and how does it work in WPF?.
Window在 Visual Studio 中创建的WPF类通常具有InitializeComponent用于初始化其属性和内容的方法 - InitializeComponent() 做什么，它在 WPF 中如何工作？.
It is generated from your XAML markup and is not contained in your code-behind .cs file, but for the compiler(and msbuild.exe)it is still a valid intrinsic part of the Window class - if you create new empty Window and click on InitializeComponent()call then a *.g.i.cstemporary file with initialization code will be opened.
它是从您的 XAML 标记生成的，不包含在您的代码隐藏 .cs 文件中，但对于编译器（和 msbuild.exe）来说，它仍然是 Window 类的有效内部部分 - 如果您创建新的空 Window 并单击在InitializeComponent()调用时*.g.i.cs，将打开一个带有初始化代码的临时文件。
So, when you put another InitializeComponentmethod into the code behind file it causes ambiguous method definition.
因此，当您将另一个InitializeComponent方法放入代码隐藏文件时，它会导致方法定义不明确。
SOLUTION:
解决方案：
Either rename your custom method to InitializeComponentsCustomand call it in the constructor:
将您的自定义方法重命名为InitializeComponentsCustom并在构造函数中调用它：
public MainWindow()
{
InitializeComponent();
InitializeComponentsCustom();
}
private void InitializeComponentsCustom()
{
// ...
}
orjust put the entire code from book method into the constructor(just do not remove the original InitializeComponentcall).
或者只是将 book 方法中的整个代码放入构造函数中（只是不要删除原始InitializeComponent调用）。
回答by CodeCaster
Like I said in my comment, read. Reading properly is a virtue you'll need during your programming career.
就像我在评论中说的，阅读。正确阅读是您在编程生涯中需要的一种美德。
You need to closely follow the note in the book:
您需要密切关注书中的注释：
To create this example, you must code the Window1 class from scratch (right-click the Solution Explorer and choose Add -> Class to get started). You can't choose Add -> Window, because that will add a code file anda XAML template for your window, complete with an automatically generated InitializeComponent() method.
要创建此示例，您必须从头开始编写 Window1 类（右键单击解决方案资源管理器并选择添加 -> 类以开始）。您不能选择“添加”->“窗口”，因为这将为您的窗口添加代码文件和XAML 模板，并带有自动生成的 InitializeComponent() 方法。
The error you get also tells you this: you're trying to define anotherInitializeComponent()method.
您得到的错误还告诉您：您正在尝试定义另一种InitializeComponent()方法。
回答by Haojie
InitializeComponentmethod is generated automatically in MainWindow.g.cs when you define MainWindow.xaml.
InitializeComponent当您定义 MainWindow.xaml 时，方法会在 MainWindow.g.cs 中自动生成。
回答by Dennis
For me it was using a Cocoa Framework Binding with Xamarin iOS
对我来说，它使用的是 Cocoa Framework Binding 和 Xamarin iOS
The View i used had two constructors named init() with different overloads.
我使用的视图有两个名为 init() 的构造函数，它们具有不同的重载。
I deleted one of them in the ApiDefinition.cs, which did the trick for me. Maybe this will help someone.
我在 ApiDefinition.cs 中删除了其中一个，这对我有用。也许这会帮助某人。
